Some description changes and documentation for logging.h

ppapi/cpp/input_event.h

 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef PPAPI_CPP_INPUT_EVENT_H_
 #define PPAPI_CPP_INPUT_EVENT_H_
 
 #include <string>
 
 #include "ppapi/c/ppb_input_event.h"
@@ skipping 158 matching lines @@
 class WheelInputEvent : public InputEvent {
  public:
   /// Constructs an is_null() wheel input event object.
   WheelInputEvent();
 
   /// This constructor constructs a wheel input event object from the
   /// provided generic input event. If the given event is itself
   /// is_null() or is not a wheel input event, the wheel object will be
   /// is_null().
   ///
-  /// @param[in] A generic input event.
+  /// @param[in] event A generic input event.
   explicit WheelInputEvent(const InputEvent& event);
 
   /// Constructs a wheel input even from the given parameters.
   ///
   /// @param[in] instance The instance for which this event occured.
   ///
   /// @param[in] time_stamp A <code>PP_TimeTicks</code> indicating the time
   /// when the event occured.
   ///
   /// @param[in] modifiers A bit field combination of the
@@ skipping 108 matching lines @@
   ///
   /// @return A string var representing a single typed character for character
   /// input events. For non-character input events the return value will be an
   /// undefined var.
   Var GetCharacterText() const;
 };
 
 }  // namespace pp
 
 #endif  // PPAPI_CPP_INPUT_EVENT_H_